<?php
// $Id: gmap_location.module,v 1.36 2008-09-18 18:25:46 bdragon Exp $

/**
 * @file
 * GMap Location module is a module to add some gmap funcationality based on location.modules information.
 *
 * The main functions are to provide a map showing all of the nodes or users that have location information on a map.
 */

/**
 * Implementation of hook_theme().
 */
function gmap_location_theme() {
  return array(
    'gmap_location_user_page' => array('arguments' => array('header', 'map', 'footer')),
    'gmap_location_node_page' => array('arguments' => array('count', 'header', 'map', 'footer')),
    // @@@ Test this one thoroughly.
    'gmap_location_infowindow_node' => array(
      'pattern' => 'gmap_location_infowindow_node__',
      'arguments' => array('node', 'opt'),
    ),
    'gmap_location_infowindow_user' => array('arguments' => array('account')),
  );
}

/**
 * Implementation of hook_perm().
 */
function gmap_location_perm() {
  return array('set user location', 'show user map', 'user locations', 'show node map');
}

/**
 * Get the user map variable defaults.
 */
function _gmap_location_user_map_defaults() {
  return array(
    'macro' => '[gmap |id=usermap|center=40,0|zoom=3|width=100%|height=400px]',
    'header' => 'This map illustrates the extent of users of this website. Each marker indicates a user that has entered their locations.',
    'footer' => '',
    'markermode' => 1,
  );
}

/**
 * Get the node map variable defaults.
 */
function _gmap_location_node_map_defaults() {
  return array(
    'macro' => '[gmap |id=nodemap|center=40,0|zoom=3|width=100%|height=400px]',
    'header' => 'This map illustrates the locations of the nodes on this website. Each marker indicates a node associated with a specific location.',
    'footer' => '',
    'markermode' => 1,
  );
}

/**
 * Implementation of hook_menu().
 */
function gmap_location_menu() {
  $items['map/user'] = array(
    'path' => 'map/user',
    'type' => MENU_NORMAL_ITEM,
    'title' => 'User locations',
    'access arguments' => array('show user map'),
    'page callback' => 'gmap_location_user_page',
  );
  $items['map/user/load'] = array(
    'type' => MENU_CALLBACK,
    'access arguments' => array('show user map'),
    'page callback' => 'gmap_location_user_point',
  );
  $items['map/node'] = array(
    'type' => MENU_NORMAL_ITEM,
    'title' => 'Node locations',
    'access arguments' => array('show node map'),
    'page callback' => 'gmap_location_node_page',
  );
  $items['map/node/load/%node/%'] = array(
    'type' => MENU_CALLBACK,
    'access arguments' => array('show node map'),
    'page callback' => 'gmap_location_node_point',
    'page arguments' => array(3,4),
  );
  $items['admin/settings/gmap_location'] = array(
    'type' => MENU_NORMAL_ITEM,
    'title' => 'GMap Location',
    'access arguments' => array('administer site configuration'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('gmap_location_admin_settings'),
    'description' => 'Configure GMap Location settings.',
  );
  return $items;
}

/**
 * Draws a page with a google map that has all of the site users.
 */
function gmap_location_user_page() {
  $markertypes = variable_get('gmap_role_markers', array(DRUPAL_AUTHENTICATED_RID => 'drupal'));
  $usermap = variable_get('gmap_user_map', _gmap_location_user_map_defaults());
  $map = array_merge(gmap_defaults(), gmap_parse_macro($usermap['macro']));
  $mode = $usermap['markermode'];
  $map['rmtcallback'] = url('map/user/load');
  $map['markermode'] = $usermap['markermode'];

  // Find the highest rid, if available, for each user with a location.

  $result = db_query("
    SELECT
      u.name, MAX(r.rid) as role, i.uid, l.latitude, l.longitude
    FROM
      {users} u
    INNER JOIN
      {location_instance} i
      ON
        u.uid = i.uid
    INNER JOIN
      {location} l
      ON
        i.lid = l.lid
    LEFT JOIN
      {users_roles} r
      ON
        i.uid = r.uid
    WHERE
      u.status = 1
    AND
      (l.latitude != 0 OR l.longitude != 0)
    GROUP BY
      i.uid");

  while ($row = db_fetch_object($result)) {
    // Determine marker type to show.
    $marker = $markertypes[DRUPAL_AUTHENTICATED_RID];
    if ($row->role && isset($markertypes[$row->role])) {
      $marker = $markertypes[$row->role];
    }

    // Users with the 'user locations' permission are allowed to see who
    // each marker represents.
    if (user_access('user locations')) {
      if ($mode == 1) {
        $newmarker['rmt'] = $row->uid;
      }
      else if ($mode == 2) {
        $newmarker['link'] = url('user/'. $row->uid);
      }
      $newmarker['latitude'] = $row->latitude;
      $newmarker['longitude'] = $row->longitude;
      $newmarker['markername'] = $marker;
      $newmarker['opts']['title'] = check_plain($row->name);
    }
    else {
      $newmarker['latitude'] = $row->latitude;
      $newmarker['longitude'] = $row->longitude;
      $newmarker['markername'] = $marker;
    }
    $map['markers'][] = $newmarker;
  }

// @@@ Move to gmap_addons.
/*
  if (user_access('user locations') && function_exists('buddylist_get_buddies') && count($locationbyuser)>0) {
    //create lines for buddies
    if (!isset($thismap['shapes'])) {
      $thismap['shapes']=array();
    }
    ksort($locationbyuser);
    foreach ($locationbyuser as $key => $value) {
      $buddies= buddylist_get_buddies($key);
      foreach ($buddies as $bkey => $bvalue) {
        if ($bkey > $key && isset($locationbyuser[$bkey])) {
          $thismap['shape'][] = array(
            'points' => array($locationbyuser[$key], $locationbyuser[$bkey]),
            'type' => 'line'
          );
        }
      }
    }
  }
*/

  return theme('gmap_location_user_page',
    $usermap['header'],
    theme('gmap', array('#settings' => $map)),
    $usermap['footer']
  );
}

/**
 * AHAH callback for getting the contents of a user point popup.
 */
function gmap_location_user_point() {
  $uid = arg(3);
  if (is_numeric($uid) && $account = user_load(array('uid' => $uid))) {
    echo theme('gmap_location_user_html', $account);
    exit();
  }
}

/**
 * Theme function for displaying the user page.
 */
function theme_gmap_location_user_page($header, $map, $footer) {
  global $user;

  $output = "<p>$header</p>\n<p>$map</p>\n<p>$footer</p>";

  if ($user->uid > 0) {
    $output .= '<p>'. t('To add/change your location to the user map, <a href="@url">edit your location</a>.', array('@url' => url('user/'. $user->uid .'/edit'))) .'</p>';
  }

  return $output;
}

/**
 * Draws a page with a google map with the node on it, or if no node is set all of the nodes on it.
 *
 * @param $nn
 * The node nid to draw on the map.  If this is not set, or is null then all of the nodes will be drawn.
 */
function gmap_location_node_page($nid = NULL) {

  $nodemap = variable_get('gmap_node_map', _gmap_location_node_map_defaults());
  $markertypes = variable_get('gmap_node_markers', array());

  $map = array_merge(
    gmap_defaults(),
    gmap_parse_macro($nodemap['macro']));

  $mode = $nodemap['markermode'];
  $map['rmtcallback'] = url('map/node/load');
  $map['markermode'] = $nodemap['markermode'];

  if (!is_array($map['markers'])) {
    $map['markers'] = array();
  }

  $marker_sql1 = '';
  $marker_sql2 = '';
  if (module_exists('gmap_taxonomy')) {
    $marker_sql1 = ', m.marker';
    $marker_sql2 = 'LEFT JOIN {gmap_taxonomy_node} m ON n.vid = m.vid';
  }

  $add_sql = (is_numeric($nid) && $nid > 0) ? ' AND n.nid = %d' : '';
  $result = db_query(db_rewrite_sql("
    SELECT n.nid, n.type, n.title, l.latitude, l.longitude $marker_sql1
    FROM {node} n
    INNER JOIN {location_instance} i
      ON n.vid = i.vid
    INNER JOIN {location} l
      ON l.lid = i.lid
    $marker_sql2
    WHERE
      n.status = 1
    AND
      (l.latitude != 0 OR l.longitude != 0)
    ". $add_sql), $nid);

  $count = 0;
  while ($row = db_fetch_object($result)) {
    $count++;
    $newmarker = array();
    if ($mode == 1) {
      // Popup
      $newmarker['rmt'] = $row->nid;
    }
    elseif ($mode == 2) {
      // Link
      $newmarker['link'] = url('node/'. $row->nid);
    }

    $newmarker['latitude'] = $row->latitude;
    $newmarker['longitude'] = $row->longitude;
    $newmarker['markername'] = isset($markertypes[$row->type]) ? $markertypes[$row->type] : 'drupal';
    if (isset($row->marker) && !empty($row->marker)) {
      $newmarker['markername'] = $row->marker;
    }
    $newmarker['opts']['title'] = $row->title;
    $map['markers'][] = $newmarker;
  }

  // Special stuff for single marker
  if ($count == 1) {
    // Center map on only marker.
    $map['latitude'] = $map['markers'][0]['latitude'];
    $map['longitude'] = $map['markers'][0]['longitude'];

    // Autoclick in single marker case.
    if ($mode == 1) {
      $map['markers'][0]['autoclick'] = TRUE;
    }
  }

  // Special cases for single node view.
  if (is_numeric($nid) && $node = node_load($nid)) {

    // Organic groups. Group nodes are displayed as a map of the users who belong to the group.
    if (user_access('user locations') && function_exists('og_is_group_type') && og_is_group_type($node->type)) {
      $rolemarkers = variable_get('gmap_role_markers', array());

      $map['markers'] = array(); // Reset markers.

      $result = db_query("
        SELECT
          MAX(r.rid) as role, i.uid, l.latitude, l.longitude
        FROM
          {og_uid} o
        INNER JOIN {location_instance} i
          ON i.uid = o.uid
        INNER JOIN {location} l
          ON l.lid = i.lid
        LEFT JOIN {users_roles} r
          ON i.uid = r.uid
        WHERE
          o.nid = %d
        AND
          o.is_active >= 1
        AND
          (l.latitude != 0 OR l.longitude != 0)
        GROUP BY
          o.uid", $nid, 'user');

      while ($row = db_fetch_object($result)) {
        $newmarker = array();
        $newmarker['rmt'] = $nid .'/'. $row->uid;

        // Determine marker type to show.
        $newmarker['markername'] = $markertypes[DRUPAL_AUTHENTICATED_RID];
        if ($row->role && isset($rolemarkers[$row->role])) {
          $newmarker['markername'] = $rolemarkers[$row->role];
        }
        $newmarker['latitude'] = $row->latitude;
        $newmarker['longitude'] = $row->longitude;
        $map['markers'][] = $newmarker;
      }
    }
  }

  return theme('gmap_location_node_page',
    $count,
    $nodemap['header'],
    theme('gmap', array('#settings' => $map)),
    $nodemap['footer']
  );
}

/**
 * AHAH callback for getting the contents of a node point popup.
 */
function gmap_location_node_point($node, $opt) {
  $output = '';
  // @@@ Make sure $node->type is an ok thing to do here..
  echo theme(array("gmap_location_infowindow_node__$node->type", 'gmap_location_infowindow_node'), $node, $opt);
  // exit();
  return;
}

/**
 * Theme function for displaying the node page.
 */
function theme_gmap_location_node_page($count, $header, $map, $footer) {
  $output = '';
  if ($header) {
    $output .= "<p>$header</p>";
  }
  $output .= $map;
  if ($footer) {
    $output .= "<p>$footer</p>";
  }
  return $output;
}

/**
 * Admin Settings Page
 *
 */
function gmap_location_admin_settings() {
  $form['geocoding'] = array(
    '#type' => 'fieldset',
    '#title' => t('Geocode Locations'),
  );
  $form['geocoding']['gmap_geocode'] = array(
    '#type' => 'radios',
    '#title' => t('Enable the Google Map API geocoding'),
    '#default_value' => variable_get('gmap_geocode', 1),
    '#options' => array(1 => 'Enabled', 0 => 'Disabled'),
  );

  $form['user'] = array(
    '#type' => 'fieldset',
    '#title' => t('User settings'),
  );

  // gmap_user_map defaults
  $temp = variable_get('gmap_user_map', _gmap_location_user_map_defaults());

  $form['user']['gmap_user_map'] = array(
    '#type' => 'fieldset',
    '#title' => t('User Map (<em>map/user</em>)'),
    '#tree' => TRUE,
  );
  $form['user']['gmap_user_map']['macro'] = array(
    '#type' => 'textfield',
    '#title' => t('Macro'),
    '#default_value' => $temp['macro'],
    '#size' => 50,
    '#maxlength' => 500,
    '#description' => t('The gmap macro where the user information will be diplayed on.'),
  );
  $form['user']['gmap_user_map']['header'] = array(
    '#type' => 'textarea',
    '#title' => t('Page header'),
    '#description' => t('Text at the top of the user map.', array('@url' => url('map/user'))),
    '#default_value' => $temp['header'],
    '#cols' => 50,
    '#rows' => 6,
  );
  $form['user']['gmap_user_map']['footer'] = array(
    '#type' => 'textarea',
    '#title' => t('Page footer'),
    '#description' => t('Text at the bottom of the user map.'),
    '#default_value' => $temp['footer'],
    '#cols' => 50,
    '#rows' => 6,
  );
  $form['user']['gmap_user_map']['markermode'] = array(
    '#type' => 'radios',
    '#title' => t('Marker action'),
    '#description' => t('Perform this action when a marker is clicked.'),
    '#options' => array(t('Do nothing'), t('Open info window'), t('Open link')),
    '#default_value' => $temp['markermode'],
  );


  // Option to use a different marker for each role
  $form['user']['gmap_role_markers'] = array(
    '#type' => 'fieldset',
    '#title' => t('Markers per role'),
    '#description' => t('Choose a marker to represent each user role on the user map. If a user belongs to multiple roles, the marker for the highest Role ID will be used.'),
    '#tree' => TRUE,
  );

  // Retrieve and sort list of roles, sans anonymous user
  $roles = user_roles(TRUE);
  //asort($roles);

  $defaults = variable_get('gmap_role_markers', array());

  // Create a selection box per role
  foreach ($roles as $rid => $role) {
    $form['user']['gmap_role_markers'][$rid] = array(
      '#type' => 'gmap_markerchooser',
      '#title' => t('%role (Role ID: %rid)', array('%role' => $role, '%rid' => $rid)),
      '#default_value' => isset($defaults[$rid]) ? $defaults[$rid] : 'drupal',
    );
  }

  $form['node'] = array(
    '#type' => 'fieldset',
    '#title' => t('Node settings'),
  );

  // gmap_node_map defaults
  $temp = variable_get('gmap_node_map', _gmap_location_node_map_defaults());

  $form['node']['gmap_node_map'] = array(
    '#type' => 'fieldset',
    '#title' => t('Node Map (<em>map/node</em>)'),
    '#tree' => TRUE,
  );
  $form['node']['gmap_node_map']['macro'] = array(
    '#type' => 'textfield',
    '#title' => t('Macro'),
    '#default_value' => $temp['macro'],
    '#size' => 50,
    '#maxlength' => 500,
    '#description' => t('The gmap macro where the node information will be diplayed on.'),
  );
  $form['node']['gmap_node_map']['header'] = array(
    '#type' => 'textarea',
    '#title' => t('Page header'),
    '#description' => t('Text at the top of the node map.'),
    '#default_value' => $temp['header'],
    '#cols' => 50,
    '#rows' => 6,
  );
  $form['node']['gmap_node_map']['footer'] = array(
    '#type' => 'textarea',
    '#title' => t('Page footer'),
    '#description' => t('Text at the bottom of the node map.'),
    '#default_value' => $temp['footer'],
    '#cols' => 50,
    '#rows' => 6,
  );
  $form['node']['gmap_node_map']['markermode'] = array(
    '#type' => 'radios',
    '#title' => t('Marker action'),
    '#description' => t('Perform this action when a marker is clicked.'),
    '#options' => array(t('Do nothing'), t('Open info window'), t('Open link')),
    '#default_value' => $temp['markermode'],
  );

  // Option to use a different marker for each content type.
  $form['node']['gmap_node_markers'] = array(
    '#type' => 'fieldset',
    '#title' => t('Markers per content type'),
    '#description' => t('Choose a marker to represent each type of content on the node map.'),
    '#tree' => TRUE,
  );

  $ntypes = node_get_types();

  $defaults = variable_get('gmap_node_markers', array());

  foreach ($ntypes as $key => $value) {
    $form['node']['gmap_node_markers'][$key] = array(
      '#type' => 'gmap_markerchooser',
      '#title' => t('Marker for '. $value->name),
      '#default_value' => isset($defaults[$key]) ? $defaults[$key] : 'drupal',
    );
    if (intval(variable_get('location_maxnum_'. $key, 0)) === 0) {
      $form['node']['gmap_node_markers'][$key]['#description'] = t('This content type is not currently Location enabled.');
    }
  }
  return system_settings_form($form);
}

/**
 * Draw block of location for current node.
 */
function gmap_location_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks[0]['info'] = t('Location map');
      $blocks[1]['info'] = t('Author map');
      return $blocks;

    case 'configure':
      $form = array();
      if ($delta == 0) { // Location map
        $form['gmap_location_block_macro'] = array(
          '#type' => 'textfield',
          '#title' => t('Map Macro'),
          '#size' => 60,
          '#maxlength' => 500,
          '#description' => t('A macro to be used as a base map for the location block.  This map will be recentered on the location, so the center is not that important. <p>Alternate base map macros can be entered for a specific node type below.'),
          '#default_value' => variable_get('gmap_location_block_macro', '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]'),
        );

        $ntypes = node_get_types();
        foreach ($ntypes as $key => $value) {
          if (variable_get('location_maxnum_'. $key, 0)) {
            $form['gmap_location_block_macro_'. $key] = array(
              '#type' => 'textfield',
              '#title' => t('Map Macro for '. $value->name),
              '#size' => 60,
              '#maxlength' => 500,
              '#default_value' => variable_get('gmap_location_block_macro_'. $key, ''),
            );
          }
        }
      }
      elseif ($delta == 1) { // Author map
        $form['gmap_location_author_block_macro'] = array(
          '#type' => 'textfield',
          '#title' => t('Map Macro'),
          '#size' => 60,
          '#maxlength' => 500,
          '#description' => t('A macro to be used as a base map for the location block author.  This map will be recentered on the location, so the center is not that important.'),
          '#default_value' => variable_get('gmap_location_author_block_macro', '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]'),
        );

        $form['gmap_location_author_block_types'] = array(
          '#type' => 'checkboxes',
          '#title' => t('Enable author block for the following content types'),
          '#options' => node_get_types('names'),
          '#default_value' => variable_get('gmap_location_author_block_types', array()),
        );
      }
      return $form;

    case 'save':
      if ($delta == 0) {
        // Save macro, if customized.
        $macro = trim($edit['gmap_location_block_macro']);
        if ($macro == '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]' || empty($macro)) {
          // If the user doesn't customize the variable, don't set it.
          // This saves a lot of headache in the future.
          variable_del('gmap_location_block_macro');
        }
        else {
          variable_set('gmap_location_block_macro', $macro);
        }

        // Save node type specific macros.
        $ntypes = node_get_types();
        foreach ($ntypes as $key => $value) {
          if (variable_get('location_maxnum_'. $key, 0)) {
            $val = trim($edit["gmap_location_block_macro_$key"]);
            if (empty($val)) {
              variable_del("gmap_location_block_macro_$key");
            }
            else {
              variable_set('gmap_location_block_macro_'. $key, $edit['gmap_location_block_macro_'. $key]);
            }
          }
        }
      }
      elseif ($delta == 1) {
        // Save macro, if customized.
        $macro = trim($edit['gmap_location_author_block_macro']);
        if ($macro == '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]' || empty($macro)) {
          // If the user doesn't customize the variable, don't set it.
          // This saves a lot of headache in the future.
          variable_del('gmap_location_author_block_macro');
        }
        else {
          variable_set('gmap_location_author_block_macro', $macro);
        }

        // Save "enabled on" types.
        variable_set('gmap_location_author_block_types', array_keys(array_filter($edit['gmap_location_author_block_types'])));
      }
      return;

    case 'view':
      switch ($delta) {
        case 0:
          if (arg(0)=='node' && is_numeric(arg(1))) {
            return gmap_location_block_view(arg(1));
          }
          break;
        case 1:
          if (arg(0)=='node' && is_numeric(arg(1))) {
            return gmap_location_author_block_view(arg(1));
          }
          break;
      }
  }
}

function gmap_location_block_view($nid) {
  $block = array();
  $node = node_load($nid);
  if ($node->locations) {
    $markertypes = variable_get('gmap_node_markers', array());
    $markers = array();
    foreach ($node->locations as $loc) {
      // @@@ Todo: Client side geocoding
      if ($loc['latitude'] || $loc['longitude']) {
        $markername = isset($markertypes[$node->type]) ? $markertypes[$node->type] : 'drupal';
        if (module_exists('gmap_taxonomy')) {
          $t = db_result(db_query('SELECT marker FROM {gmap_taxonomy_node} WHERE vid = %d', $node->vid));
          if (!empty($t)) {
            $markername = $t;
          }
        }

        $markers[] = array(
          'latitude' => $loc['latitude'],
          'longitude' => $loc['longitude'],
          'markername' => $markername,
        );
      }
    }
    if (!empty($markers)) {
      $macro = variable_get('gmap_location_block_macro_'. $node->type, '');
      if (empty($macro)) {
        $macro = variable_get('gmap_location_block_macro', '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]');
      }
      $map = gmap_parse_macro($macro);
      $map['latitude'] = $markers[0]['latitude'];
      $map['longitude'] = $markers[0]['longitude'];
      $map['markers'] = $markers;
      $block['subject'] = t('Location');
      $block['content'] = theme('gmap', array('#settings' => $map));
    }
  }
  return $block;
}

function gmap_location_author_block_view($nid) {
  $block = array();
  $node = node_load($nid);
  if (in_array($node->type, variable_get('gmap_location_author_block_types', array()))) {
    $result = db_fetch_array(db_query("SELECT latitude, longitude FROM {location} l INNER JOIN {location_instance} i ON l.lid = i.lid WHERE i.uid = %d", $node->uid));
    if (!$result) {
      // Location not set at all.
      return;
    }
    if (empty($result['latitude']) && empty($result['longitude'])) {
      // Coordinates not set.
      return;
    }
    $macro = variable_get('gmap_location_author_block_macro', '[gmap |width=100% |height=200px |control=None |behavior=+autozoom +notype]');
    $map = array(
      '#map' => 'gmap_location_authorblock',
      '#settings' => gmap_parse_macro($macro),
    );
    $map['#settings']['markers'] = array();
    $map['#settings']['markers'][] = array(
      'latitude' => $result['latitude'],
      'longitude' => $result['longitude'],
      'markername' => variable_get('gmap_user_map_marker', 'drupal'),
      'label' => check_plain($node->name),
    );
    $map['#settings']['latitude'] = $result['latitude'];
    $map['#settings']['longitude'] = $result['longitude'];

    $block['subject'] = t('Author Location');
    $block['content'] = theme('gmap', $map);
  }
  return $block;
}

/**
 * Default theme for image nodes.
 * @@@ Todo: Move to a tpl.
 */
function theme_gmap_location_infowindow_node__image($node) {
  $out = '<a href="'. url('node/'. $node->nid) .'">'. check_plain($node->title) .'</a> <br>';
  $out .= image_display($node, 'thumbnail');
  return $out;
}

// @@@ This is not thoroughly tested for 5.x yet!
// @@@ Or 6.x for that matter!
/**
 * Theme an Organic Groups node info window.
 */
function theme_gmap_location_infowindow_node__og($node, $opt) {
  if (is_numeric($opt) && $account = user_load(array('uid' => $opt))) {
    $output = theme('user_picture', $account);
    $output .= theme('username', $account);
    echo $output;
    exit();
  }
}

// @@@ This is completely wrong.
/**
 * Theme a node info window.
 * @ingroup themable
 */
function theme_gmap_location_infowindow_node($node) {
  // Allow a module (where the module name matches the node type name)
  // to define a custom display for the google map label.
  // For this to work with flexinode defined data types,
  // a module called 'flexinode_#.module' in your site's module
  // directory and add theme_hook_gmapnodelabel($node, $location) to it.
  // Be sure to enable your 'flexinode_#.module'.
  return '<div class="gmapnodelabel gmapnodelabel-'. form_clean_id($node->type) .
    '">'. strtr(theme('node', $node, TRUE), "'\n\r", '"  ') .'</div>'; // make sure it all goes on one line.
}

/**
 * Default theme for user infowindows.
 */
function theme_gmap_location_infowindow_user($account) {
  $returntxt = theme('user_picture', $account);
  $returntxt .= theme('username', $account);
  return $returntxt;
}

/**
 * Implementation of hook_node_type().
 */
function gmap_location_node_type($op, $info) {
  $temp = variable_get('gmap_node_markers', array());
  switch ($op) {
    case 'delete':
      unset($temp[$info->type]);
      break;
    case 'insert':
      $temp[$info->type] = 'drupal';
      break;
    case 'update':
      if (!empty($info->old_type) && $info->old_type != $info->type) {
        $temp[$info->type] = $temp[$info->old_type];
        unset($temp[$info->old_type]);
      }
      break;
  }
  variable_set('gmap_node_markers', $temp);
}